Patents by Inventor Marvin L. Sassler
Marvin L. Sassler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230208401Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications, or data signals, as well as reduce phase noise of precision oscillators. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are undiminished. Trans-filters are Linear Time Invariant circuits, have no noise x noise threshold and can be cascaded, increasing output signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions.Type: ApplicationFiled: March 1, 2023Publication date: June 29, 2023Inventors: Marvin L. SASSLER, Alan T. SASSLER
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Patent number: 11621701Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications, or data signals, as well as reduce phase noise of precision oscillators. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are undiminished. Trans-filters are Linear Time Invariant circuits, have no noise x noise threshold and can be cascaded, increasing output signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions.Type: GrantFiled: May 28, 2021Date of Patent: April 4, 2023Assignee: Dynaspot Corp.Inventors: Marvin L. Sassler, Alan T. Sassler
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Publication number: 20210297064Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications, or data signals, as well as reduce phase noise of precision oscillators. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are undiminished. Trans-filters are Linear Time Invariant circuits, have no noise×noise threshold and can be cascaded, increasing output signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions.Type: ApplicationFiled: May 28, 2021Publication date: September 23, 2021Inventors: Marvin L. SASSLER, Alan T. SASSLER
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Patent number: 11025230Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications or data signals. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are increased by addition. Trans-filters are Linear Time Invariant circuits, have no noise×noise threshold and can be cascaded, increasing in-band signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions.Type: GrantFiled: May 6, 2019Date of Patent: June 1, 2021Assignee: DYNASPOT CORP.Inventors: Marvin L. Sassler, Alan T. Sassler
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Publication number: 20190260357Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications or data signals. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are increased by addition. Trans-filters are Linear Time Invariant circuits, have no noise x noise threshold and can be cascaded, increasing in-band signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions.Type: ApplicationFiled: May 6, 2019Publication date: August 22, 2019Inventors: Marvin L. SASSLER, Alan T. SASSLER
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Patent number: 10320365Abstract: Frequency domain (FDTF) and time domain (TDTF) trans-filters compress in-band AWGN, demodulate input signals and have no threshold due to applied noise. Two parallel frequency selective networks with opposite amplitude vs frequency slopes are designed to remain 180 degrees out of phase over the signal band in the FDTF whereas two parallel delay networks are used in the TDTF. Output amplitudes are equal at band center and are summed producing a monotonic amplitude vs frequency characteristic going thru zero at center frequency with abrupt phase reversal. This produces the parabolic output noise density and differentiates applied signals. Absence of nonlinear circuit components and product devices prevents generation of noise×noise products, avoiding the threshold phenomenon. Exponentially modulated digital signals produce output impulses due to the slope and abrupt phase reversal. The impulses have strong fundamental frequency components and may be recovered at baseband without frequency conversion.Type: GrantFiled: January 22, 2018Date of Patent: June 11, 2019Assignee: DYNASPOT CORP.Inventors: Marvin L. Sassler, Alan T. Sassler
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Publication number: 20180159509Abstract: Frequency domain (FDTF) and time domain (TDTF) trans-filters compress in-band AWGN, demodulate input signals and have no threshold due to applied noise. Two parallel frequency selective networks with opposite amplitude vs frequency slopes are designed to remain 180 degrees out of phase over the signal band in the FDTF whereas two parallel delay networks are used in the TDTF. Output amplitudes are equal at band center and are summed producing a monotonic amplitude vs frequency characteristic going thru zero at center frequency with abrupt phase reversal. This produces the parabolic output noise density and differentiates applied signals. Absence of nonlinear circuit components and product devices prevents generation of noise×noise products, avoiding the threshold phenomenon. Exponentially modulated digital signals produce output impulses due to the slope and abrupt phase reversal. The impulses have strong fundamental frequency components and may be recovered at baseband without frequency conversion.Type: ApplicationFiled: January 22, 2018Publication date: June 7, 2018Inventors: Marvin L. SASSLER, Alan T. SASSLER
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Patent number: 9941862Abstract: The trans-filter compresses in band AWGN, demodulates input signals and has no threshold due to applied noise. Two frequency selective networks with opposite amplitude vs frequency slopes are designed to remain 180 degrees out of phase over the signal band. Output amplitudes are equal at band center and are summed producing a monotonic amplitude vs frequency characteristic going thru zero at center frequency with abrupt phase reversal. This produces the parabolic output noise density and differentiates applied signals. Absence of nonlinear circuit components and product devices prevents generation of noise×noise products, avoiding the threshold phenomenon. Exponentially modulated digital signals produce output impulses due to the slope and abrupt phase reversal. The impulses have strong fundamental frequency components and may be recovered at baseband without frequency conversion. Cascading trans-filters increases noise reduction and impulse amplitude.Type: GrantFiled: March 20, 2015Date of Patent: April 10, 2018Assignee: DYNASPOT CORP.Inventors: Marvin L. Sassler, Alan T. Sassler
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Publication number: 20170141761Abstract: The trans-filter compresses in band AWGN, demodulates input signals and has no threshold due to applied noise. Two frequency selective networks with opposite amplitude vs frequency slopes are designed to remain 180 degrees out of phase over the signal band. Output amplitudes are equal at band center and are summed producing a monotonic amplitude vs frequency characteristic going thru zero at center frequency with abrupt phase reversal. This produces the parabolic output noise density and differentiates applied signals. Absence of nonlinear circuit components and product devices prevents generation of noise x noise products, avoiding the threshold phenomenon. Exponentially modulated digital signals produce output impulses due to the slope and abrupt phase reversal. The impulses have strong fundamental frequency components and may be recovered at baseband without frequency conversion. Cascading trans-filters increases noise reduction and impulse amplitude.Type: ApplicationFiled: March 20, 2015Publication date: May 18, 2017Applicant: Dynaspot Corp.Inventors: Marvin L. SASSLER, Alan T. SASSLER
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Patent number: 4330125Abstract: A device for reducing torque and vibration caused by an off-center impact between a ball and the face of a racquet. The device includes tubular guide means located about the periphery of the racquet head. Mounted within the tubular guide means are a system of self-adjusting counterbalancing weights. Movement of the racquet by an off-center impact causes the counterbalancing weights to be displaced. The displacement of the weights offsets and balances the torque and vibration of the impact.Type: GrantFiled: August 22, 1980Date of Patent: May 18, 1982Inventor: Marvin L. Sassler
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Patent number: 4318126Abstract: Improved multiplexed communications apparatus distributes plural video signals via a single satellite transponder with enhanced reproduced quality, i.e., improved signal-to-noise ratio. The up-link transmitter delays each signal for one line period, and computes statistics characterizing the preceding subject line (e.g., minimum signal level and dynamic range) which are transmitted during the horizontal synchronizing pulse period. The transmitted video is then shifted in level and selectively amplified in accordance with the line statistics to more fully occupy the available transponder deviation allotted to the channel.Following satellite frequency shifting and transponder re-broadcasting, the received, modified video is restored utilizing the sync-period transmitted information (minimum level/offset; range/scale factor). Each multiplexed received video signal thus exhibits a substantially enhanced signal-to-noise ratio vis-a-vis video information transmitted in unmodified form.Type: GrantFiled: April 2, 1980Date of Patent: March 2, 1982Inventor: Marvin L. Sassler
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Patent number: 4295155Abstract: The blacker-than-black sync pulse of a standard video signal is replaced by a gray scale sync to increase picture signal, permit audio multiplexing and allow security phase inversion by means of encoder and decoder circuitry including a sync stripper, gate and timing generator, audio processor, phase code generator, color reference regenerator, blank and summing amplifier, and phase reversal amplifier.Type: GrantFiled: June 8, 1979Date of Patent: October 13, 1981Assignee: International Telephone and Telegraph CorporationInventors: Harold F. Jarger, Marvin L. Sassler
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Patent number: 3991372Abstract: A doppler signal modifying a carrier wave has its sign reversed by a circ which includes a pair of signal sources whose frequencies are above and below that of the carrier by equal amounts. The original signal and one of these sources control a first flip-flop, while the other source and a voltage controlled oscillator, whose frequency is normally set to that of the carrier, control a second flip-flop. The square waves thus produced, which have frequencies corresponding to the difference in frequency between the control signals, are applied in particular combinations to a pair of exclusive OR gates, whose outputs are integrated and then combined in opposition to develop an error signal which controls the voltage controlled oscillator. The output of this oscillator, when this error signal is minimized, is the desired signal.Type: GrantFiled: September 24, 1975Date of Patent: November 9, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Marvin L. Sassler